Battlefield 3 DoS Attack

Battlelog has details on a denial of service attack EA is currently battling
in Battlefield 3, their military shooter:

Despite our security
measures, we have been working around the clock to mitigate the impact of an
ongoing denial-of-service attack on our Battlefield 3 game infrastructure over
the last several days. While the motives are unclear, the focus of the attack
has been interference with network communications preventing access to
multiplayer gameplay. At this point, no user data is involved. We share your
frustration about the impact this has had to our service and the ability for
many of you to play Battlefield 3. We are working tirelessly to mitigate the
problem.

As a part of our efforts to resolve these issues, we’ve conducted rolling
restarts of Battlefield infrastructure servers to apply some updates. Thank you
for your patience and support while we work to get everyone back and playing
Battlefield 3 as soon as possible. More updates to come.